Laboratoire de l'Informatique et du Parallélisme » CIAB

#! /bin/bash

#

# ST - 2012-07-04

#

# Delete the compute nodes for a configuration.

#

# Get the directory of the script.

SCRIPT_PATH=`dirname $0`

# Get the script name.

SCRIPT_NAME=`basename $0`

# Source the common configuration variables.

. $SCRIPT_PATH/c-i-a-b.common

#

# Get the configurations

#

CONFIGURATIONS=`ls $SCRIPT_PATH/$CONST_CONFIGURATIONS_DIR`

CONFIGURATIONS_STRING="{"

for i in $CONFIGURATIONS ; do

  CONFIGURATIONS_STRING="$CONFIGURATIONS_STRING$i|"

done

#

# Check command line arguments.

#

if [ "x$1" == "x" ]

  then

     echo

     echo "Missing parameter. Aborting!"

     echo

     echo "Usage: $SCRIPT_NAME configuration"

     echo

     echo -e "	configuration: one of $CONFIGURATIONS_STRING\b}"

     exit 1

fi

#

# Does the configuration exist?

#

CONFIGURATION_FOUND=""

CONFIGURATION=`echo $1 | tr [:upper:] [:lower:]`

for i in $CONFIGURATIONS ; do

    CURRENT_CONFIGURATION=`echo $i | tr [:upper:] [:lower:]`

    if [ $CONFIGURATION == $CURRENT_CONFIGURATION ] ; then

      CONFIGURATION_FOUND=$i

    fi

done

if [ -z $CONFIGURATION_FOUND ] ; then

  echo

  echo

  echo "The configuration \"$1\" does not exist".

  echo -e "The configuration must be one of $CONFIGURATIONS_STRING\b}."

  echo "Aborting!"

  echo

  echo

  exit 1

else

  CONFIGURATION=$CONFIGURATION_FOUND  

fi 

#

# Source the specific variables for the configuration.

#

. $SCRIPT_PATH/$CONST_CONFIGURATIONS_DIR/$CONFIGURATION/c-i-a-b.config.common

#

# Delete the compute nodes.

#

COMPUTE_NODE_INDEX=1

while [ $COMPUTE_NODE_INDEX -le $COMPUTE_NODE_MAX_INDEX ] ; do

#

# Compute the host name.

#

  #

  # Convert the number into a three caracters strings.

  #

  COMPUTE_NODE_INDEX_STRING=$COMPUTE_NODE_INDEX

  while [ ${#COMPUTE_NODE_INDEX_STRING} -lt 3 ] ; do

    COMPUTE_NODE_INDEX_STRING="0$COMPUTE_NODE_INDEX_STRING"

  done

  #

  # Compute the host name.

  #

  CURRENT_HOST_NAME=${COMPUTE_NODE_NAME_PREFIX}${COMPUTE_NODE_INDEX_STRING}

  #

  echo "Deleting $CURRENT_HOST_NAME..."

  #

  # If the compute node is running, stop it.

  #

  IS_RUNNING=`xm list | grep $CURRENT_HOST_NAME`

  if [ ! -z "$IS_RUNNING" ] ; then

    xm shutdown $CURRENT_HOST_NAME

    #

    # And wait until it has sopped.

    #

    IS_RUNNING=""

    while [ -z "$IS_RUNNING" ] ; do

      IS_RUNNING=`xm list | grep $CURRENT_HOST_NAME`

      sleep 1

    done # End while

  sleep 1  # Extra delay after VM is stopped.

  fi # End compute node is running.

  #

  # If necessary, delete the VM system disk.

  #

  COMPUTE_NODE_SYSTEM_DISK_DEVICE="${COMPUTE_NODE_MODEL_SYSTEM_VOLUME_GROUP_DEVICE}/${CURRENT_HOST_NAME}-${CONST_SYSTEM_DISK_POSTFIX}-clone"

  if [ -e $COMPUTE_NODE_SYSTEM_DISK_DEVICE ] ; then

    lvremove -f $COMPUTE_NODE_SYSTEM_DISK_DEVICE

    if [ $? -ne 0 ] ; then

      ciab_abort_message "Could not remove system disk for $CURRENT_HOST_NAME" 1

    fi

  fi

  #

  # If necessary, remove the swap volume for the compute node.

  #

  COMPUTE_NODE_SWAP_DISK_DEVICE="COMPUTE_NODE_SWAP_DISK_VOLUME_GROUP_DEVICE/${CURRENT_HOST_NAME}-${CONST_SWAP_DISK_POSTFIX}"

  if [ -e $COMPUTE_NODE_SWAP_DISK_DEVICE ] ; then

    lvremove -f $COMPUTE_NODE_SWAP_DISK_DEVICE

    if [ $? -ne 0 ] ; then

      ciab_abort_message "Could not remove swap disk for $CURRENT_HOST_NAME" 1

    fi

  fi

  #

  # Remove the Xen configuration file.

  #

  CURRENT_PATH=/etc/xen

  rm -f $CONST_XEN_CONFIG_DIR/$CURRENT_HOST_NAME.cfg

  #

  COMPUTE_NODE_INDEX=$((COMPUTE_NODE_INDEX + 1))

done

exit 0